:root {
  --accent: #2b6cb0;
  --accent-dark: #1a4971;
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --border: #e2e4e8;
  --error: #b3261e;
  --success: #1e7e34;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.page-center {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  max-width: 480px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 8px;
}

.topbar h1 {
  font-size: 20px;
  margin: 0;
}

.topbar-plain {
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
}

nav a:hover, nav a.active {
  color: var(--accent);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
}

.card-narrow { max-width: 380px; }
.card-wide { overflow-x: auto; }

h1, h2 { font-weight: 600; }

label {
  display: block;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--muted);
}

label.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

label.checkbox input { margin: 0; }

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  font-family: inherit;
}

textarea { resize: vertical; }

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  cursor: pointer;
}

.btn-primary:hover { background: var(--accent-dark); }

.sender-line {
  color: var(--muted);
  font-size: 13px;
  margin: -4px 0 16px;
}

.code-input {
  display: block;
  width: 100%;
  margin: 4px 0 16px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
}

.code-input:focus {
  outline: none;
  border-color: var(--accent);
}

.msg-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
}

.muted-label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.expiry-badge {
  color: #b3261e;
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
}

.msg-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 14px 0;
}

.msg-subject {
  font-size: 19px;
  margin: 0;
}

.msg-body-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.msg-timestamp {
  color: var(--muted);
  font-size: 12px;
}

.confidential-footer {
  margin-top: 16px;
  padding: 12px 14px;
  background: #f4f5f7;
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.icon-clock {
  flex-shrink: 0;
}

.btn-small {
  font-size: 13px;
  padding: 5px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  margin-right: 4px;
}

.btn-small:hover { border-color: var(--accent); color: var(--accent); }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

.btn-link:hover { color: var(--accent-dark); }

.btn-link:disabled {
  color: var(--muted);
  cursor: not-allowed;
  text-decoration: none;
}

.resend-form { margin-top: 4px; }

.btn-danger { color: var(--error); }
.btn-danger:hover { border-color: var(--error); color: var(--error); background: #fdf2f1; }

.error { color: var(--error); font-size: 14px; }
.success { color: var(--success); font-size: 14px; }
.muted { color: var(--muted); font-size: 13px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th { color: var(--muted); font-weight: 500; }

.badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.badge-aktiv { background: #e6f4ea; color: var(--success); }
.badge-abgelaufen { background: #fde8e6; color: var(--error); }
.badge-widerrufen { background: #eee; color: var(--muted); }

.actions { display: flex; gap: 4px; }

.confidential-content {
  user-select: none;
  -webkit-user-select: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin: 12px 0;
  background: #fafbfc;
}

@media print {
  .confidential-content { display: none; }
  body::after {
    content: "Drucken ist für vertrauliche Nachrichten nicht möglich.";
  }
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  margin-top: 24px;
}